here is an ebuild for rcsinfo, a (la)tex package which allows the RCS/CVS tag in a document to be parsed by (la)tex. Info here: http://www.ctan.org/tex-archive/macros/latex/contrib/rcsinfo/?action=/tex-archive/macros/latex/contrib/ this would fit in dev-tex.
Created attachment 40638 [details] rcsinfo-1.9.ebuild
Sorry for the delay. I rewrote it with latex-package.eclass and committed. Please use latex-package.eclass if you don't have to write src_install(), src_compile and pkg_post*() manually. Thanks for your contribution.